Top 100 Environmental Studies MCQS (Part 1)

Top 100 Environmental Studies MCQs (Part 1) 
For BA, B.Com and BSC Course Under CBCS Pattern

1. Basic components of environment are:

a) Atmosphere

b) Hydrosphere

c) Lithosphere

d) Biosphere

e) All of the above

Ans: e) All of the above

2. Main cause of desertification is:

a) Global Warming

b) Fuels

c) Deforestation

d) Fire

Ans: c) Deforestation

3. The process by which green plants produce all important energy for all living organisms including human being:

a) Photosynthesis

b) Respiration

c) Transpiration

d) Anaerobic Respiration

Ans: a) Photosynthesis

4. Green Plants are called as the ______________ of an ecosystem.

a) Producers

b) Autotroph components

c) Both a & b

d) None of the above

Ans: c) Both a & b

5. An area declared by the state legislation to protect wildlife is known as:

a) Forests

b) Wildlife sanctuary

c) Museum

d) None of the above

Ans: b) Wildlife sanctuary

6. Percentage of Carbon dioxide present in the atmosphere is:

a) 0.03%

b) 0.04%

c) 0.05%

d) 0.01%

Ans: b) 0.04%

7. The Chemical compound responsible for the depletion of ozone layer is:

a) Chlorofluorocarbons (CFCs)

b) Carbon dioxide

c) Sulphur

d) Nitrogen

Ans: a) Chlorofluorocarbons (CFCs)

8. The groups of biotic component of an ecosystem are:

a) Producer

b) Consumer

c) Decomposer

d) All of the above

Ans: d) All of the above

9. Which of the following is a fossil fuel?

a) Natural Gas

b) Crude oil

c) Coal Products

d) All of the above

Ans: d) All of the above

10. Which of the following is not a fossil fuel?

a) Petroleum products

b) Lignite

c) Non-renewable waste

d) Wood

Ans: d) Wood

11. Which of the following is a renewable resource?

a) Uranium

b) Bauxite

c) Sand

d) Oxygen of the atmosphere

Ans: d) Oxygen of the atmosphere

12. Which of the following is a non-renewable resource?

a) Gold

b) Iron

c) Coal

d) All of the above

Ans: d) All of the above

13. Which of the following is a renewable resource?

a) Solar Energy

b) Wind Energy

c) Biofuels

d) All of the above

Ans: d) All of the above

14. The instrument used for measuring the intensity of earthquake is:

a) Seismometer

b) Thermometer

c) Hydrometer

d) Barometer

Ans: a) Seismometer

15. The instrument used for measuring temperature:

a) Seismometer

b) Thermometer

c) Hydrometer

d) Barometer

Ans: b) Thermometer

16. The instrument used for measuring specific gravity:

a) Seismometer

b) Thermometer

c) Hydrometer

d) Barometer

Ans: c) Hydrometer

17. The instrument used for measuring atmospheric pressure

a) Seismometer

b) Thermometer

c) Hydrometer

d) Barometer

Ans: d) Barometer

18. Most earthquake prone country in the world is:

a) India

b) USA

c) Japan

d) China

Ans: c) Japan

19. The term ecosystem was coined by:

a) Tansley

b) Danish

c) Hackel

d) Odum

Ans: a) Tansley

20. Autotrophic component of an ecosystem are:

a) Wind

b) Sunlight

c) Soil

d) Green Plants

Ans: d) Green Plants

21. Water flowing through the rivers is called:

a) Biome

b) Lentic water

c) Lotic water

d) Marine water

Ans: c) Lotic water

22. Standing Water is called:

a) Biome

b) Lentic water

c) Lotic water

d) Marine water

Ans: b) Lentic water

23. A large geographical area of distinctive plant and animal groups which are adapted to that particular environment:

a) Biome

b) Lentic water

c) Lotic water

d) Marine water

Ans: a) Biome

24. Lithosere is ecological succession on a:

a) Water body

b) Sandy surface

c) Bare rock

d) Hill

Ans: c) Bare rock

25. The example of ex-situ facility is:

a) Seed Banks

b) Zoo

c) Botanical Gardens

d) All of the above

Ans: d) All of the above

26. The example of in-situ facility is:

a) National Parks

b) Biosphere reserves

c) Sanctuary

d) All of the above

Ans: d) All of the above

27. First national park established in India was:

a) Jim Corbett National Park

b) Kaziranga National Park

c) Periyar

d) Kanha National Park

Ans: a) Jim Corbett National Park

28. Total number of national parks in India is:

a) 101

b) 103

c) 105

d) 106

Ans: d) 106

29. In a national park, protection is provided to:

a) Entire ecosystem

b) Flora and Fauna

c) Fauna only

d) Flora only

Ans: b) Flora and Fauna

30. Noise pollution is measured in:

a) Nanometers

b) Hertz

c) Decibels

d) Fathoms

Ans: c) Decibels

31. Water pollution is measured in:

a) PSC

b) PCB

c) BOD

d) COD

Ans: c) BOD

32. Water is treated with chlorine to:

a) Kill Germs

b) Remove suspended particles

c) Remove Hardness

d) Remove salt

Ans: a) a) Kill Germs

33. Which of the following is not a greenhouse gas?

a) CO₂

b) CH₄

c) O₂

d) CFCs

Ans: c) O₂

34. Which of the following are greenhouse gas?

a) CO₂ (Carbon dioxide)

b) CH₄ (Methane)

c) HFCs (Hydrofluorocarbons)

d) All of the above

Ans: d) All of the above

35. Ultraviolate radiations are absorbed in the stratosphere by:

a) Oxygen

b) Ozone

c) Benzene

d) Sulphur dioxide

Ans: b) Ozone

36. The process of disposing solid waste in cities is:

a) Landfill

b) incineration

c) Recycling

d) vermicompost

Ans: a) Landfill

37. Waste disposal is the responsibility of:

a) NGO

b) Government

c) Govt and citizens

d) Govt organisations

Ans: c) Govt and citizens

38. Municipal waste includes mainly:

a) Mining Waste

b) Industrial Waste

c) Household Waste

d) construction Waste

Ans: c) Household Waste

39. Environmental effect of municipal solid waste is:

a) Acid rain

b) Increased health cost

c) decline in crop production

d) Malaria

Ans: d) Malaria

40. Which of the following are the largest contributors to global pollution?

a) Agriculture pollution

b) Tourism pollution

c) Industries pollution

d) Service sector pollution

Ans: c) Industries pollution

41. Which one of the following is the prime factor towards soil pollution?

a) soil erosion

b) floods

c) dumping of industrial waste

d) irrigation

Ans: c) dumping of industrial waste

42. Chipko andolan started in:

a) 1973

b) 1974

c) 1975

d) 1976

Ans: a) 1973

43. Chipko movement was started to conserve

a) Soil

b) Desert

c) Forests

d) Grasslands

Ans: c) Forests

44. Chipko movement was started by:

a) Sunderlal Bahuguna

b) Mahatma Gandhi

c) Uttarakhand government

d) NGOs

Ans: a) Sunderlal Bahuguna

45. ISO headquarter is located in:

a) Geneva, Switzerland

b) Norway

c) India

d) USA

Ans: a) Geneva, Switzerland

46. Waste management does not include

a) Prevention

b) Reuse

c) Recycle

d) Disposal in sea

Ans: d) Disposal in sea

47. The most favourable option in waste management is:

a) Reduce

b) Recovery

c) Landfill

d) Incineration

Ans: a) Reduce

48. Construction waste includes:

a) Sewage

b) Waste chemicals

c) electronics

d) concrete

Ans: d) concrete

49. Which crop was cultivated first using green revolution techniques?

a) Wheat

b) Rice

c) Cotton

d) Bajra

Ans: b) Rice

50. Which one of the following cause acid rain?

a) Water pollution

b) Soil pollution

c) Air pollution

d) Noise pollution

Ans: c) Air pollution

Environmental Studies MCQs Which are asked in Previous Year Exams

1. Coal is a renewable/non-renewable natural resource.

Ans: Non-renewable

2. The main constituent of biogas is the methane/Ethanol/Nitrogen.

Ans: Methane

3. Fire wood is a conventional/Non-conventional source of energy.

Ans: Conventional

4. Establishment of a botanical garden or a zoo is an example of in situ/ex-situ conservation.

Ans: Ex-situ

5. The method of coal mining which causes greater amount of environmental pollution is opencast/underground mining.

Ans: Open cast

6. A harmful solid, liquid or gaseous substance which adversely affects the living beings and environment.

Ans: Pollutant

7. Waste which can be easily degraded by micro-organism.

Ans: Biodegradable waste

8. A group of chemicals which cause cancer in man is called:

Ans: Carcinogenic

9. Incoming solar radiation at a place:

Ans: Irradiation

10. Where is incoming solar radiation highest on earth?

Ans: The equator

11. Over nourishment of water bodies due to excessive nitrates and phosphates is called:

Ans: Eutrophication

12. Superposition of digital thematic maps of a region can be done by using:

Ans: Computers

13. Stockholm conference on human environment was held in the year:

Ans: 1972

14. Bhopal Gas tragedy of 1984 was caused by:

Ans: Methyl Isocyanate

15. Green Gases mainly absorb which radiation?

Ans: Returned

16. The Process of killing micro-organism in water is called:

Ans: Sterilisation

17. Living component of the environment is known as:

Ans: Biotic Component

18. Name the plant which yields both fibre and oil.

Ans: Coconut

19. Confinement of a living species to a particular area of the earth.

Ans: Endemic

20. Units of measurement of sound is measured in terms of:

Ans: Decibel

21. Trees which shed all their leaves during winter are called as:

Ans: Deciduous trees

22. Most of the landslides occurring during rainy season are mainly natural/man-induced.

Ans: Natural

23. Water/Land is the habitant of majority of the living organism.

Ans: Water

24. Water component of environment is known as:

Ans: Hydrosphere

25. The solid, outer part of the Earth:

Ans: Lithosphere

26. The entire living organisms on planet Earth and their interrelations is called as:

Ans: Biosphere

27. The layers of gases surrounding a planet or other celestial body is called:

Ans: Atmosphere

28. Give one example of Renewable natural resource.

Ans: hydropower, geothermal power, wind energy, and solar energy

29. Organism that live in the absence of oxygen:

Ans: Tapeworm

30. Biotic components of ecosystem which can produce their food themselves.

Ans: autotrophs

31. Living species which are found only is a particular region of the world:

Ans: endemic species.

32. Cactus plants are known as:

Ans: Cactaceae Plants

33. Organic matter produced by living organisms is known as:

Ans: Humus

34. Long term pattern of weather in a particular area is called:

Ans: Climate

35. The succession in which an area is colonized by organisms for the first time is called:

Ans: Primary Succession

36. The species that invade a nude area are called ……. Species.

Ans: Pioneer community

37. Solar energy is a continuous/flow resource.

Ans: Continuous

38. Malathion is a pesticidal/fungicidal chemical.

Ans: pesticidal

39. Malathion is used to control:

Ans: Mosquitos

40. Percentage of nitrogen present in the atmosphere:

Ans: 78 Percent

41. Percentage of oxygen present in the atmosphere:

Ans: 21 percent

42. Percentage of argon present in the atmosphere:

Ans: 0.9%

43. Effluents from fertilizers industry are mainly phosphate and sulphate/Carbon dioxide, nitrogenoxiddes and sulphate.

Ans: Carbon dioxide, nitrogenoxiddes and sulphate.

44. Cycling of nutrients among living organisms, air, water and soil is called bio geological chemical/bio geological cycle.

Ans: bio geological cycle.

45. Population of various species living and interacting in a given area is known as:

Ans: Community

46. Species that are facing a very high rate of extinction in natural condition is known as:

Ans: Vulnerable species

47. A complex interlocking series of food chain is called as:

Ans: food web.

48. Which of the two ecosystems has a high biodiversity?

Ans: tropical ecosystems

49. Write full form of: BOD: Biological Oxygen Demand

50. Write full form of: MAB: Man and Biosphere Programme